High-intensity interval training is important, but coming back to your breath can be crucial to helping you train.

Understand why VO₂ max lowers as you get older, plus learn tips on how to keep it high, and why it's important to do so for ...

If you're a fitness fiend or working to improve your health, you're probably always looking for ways to run faster and farther, train harder and push your limits. You might even already track a number ...

This study investigated the predictability of maximal oxygen intake from three different submaximal heart rates assessed during an initial and follow-up ride on a cycle ergometer. Twenty-four healthy ...

For decades, elite runners have traveled the world to train at high altitude. When oxygen levels in the air are low, the body responds by producing more red blood cells—the cells responsible for ...